Within the past three days, both the chairman of the Shrine's 868,000- member fraternity and the head of the Shrine's $2 billion hospital charity have asserted publicly that the Shrine has been cleared of any impropriety by state investigators.

Gene Bracewell, chairman of the charity's board of trustees, said in a written statement Friday: ''We are gratified the investigation by the Florida secretary of state has affirmed our stated position, that fund-raising and fund allocation for the Shriners Hospitals for Crippled Children has been, and is being, carried out in an entirely proper manner.''

In Cincinnati on Wednesday, Dr. Russell Anthony, the Imperial Potentate of the Shrine fraternity, said at a press conference:

''In Florida, where we are headquartered . . . the secretary of state's office -- with our full co-operation -- investigated our fund-raising activities and our distribution of our charitable funds. In a report released yesterday, the state gave us a clean bill of health.''

Gardner Friday called both statements inaccurate. In his written release, Bracewell said he would not comment further until the investigation is completed. When pressed by reporters, Anthony said the Shrine had been exonerated, but he did not know what would happen in the future.

The state's investigation is only half completed, Gardner said. He also said that how the Shrine's hospital charity spends its money has not been the primary focus of the investigation. The probe has centered on how funds are raised and used by Shrine temples.

On Wednesday, at the request of the Shrine, the state issued a preliminary report on its investigation. The report found ''no violations of charitable solicitation laws'' by the Tampa-based Shriners Hospitals for Crippled Children.

Gardner said the finding was based largely on the fact that the hospital charity itself does virtually no fund raising. He also said Shrine leaders pressed the state to separate the hospital charity from the investigation of fund-raising by Florida's 10 temples.

The charity uses contributions raised by Shrine temples to operate the organization's 22 hospitals for crippled and burned children. The Florida temples are among 191 nationwide, which raise a reported $10 million annually for the hospitals.

''We haven't completed the investigation as it relates to the entire fund-raising activities on behalf of the hospitals,'' Gardner said. ''All we have said is that the funds are accounted for once they get to the Shriners' hospitals.''

The report said ''the investigation into the methods and disposition of the solicited funds of all the Shrine temples, clubs and various other units of the Shrine organization in Florida is continuing. This part of the investigation is expected to require another two months to complete . . . ''

Investigators are examining how the temples solicit money, whether fund- raising events are misrepresented, whether temples keep accurate financial records, whether all money raised for the hospitals goes to the hospitals and whether Shrine temples meet state registration and financial reporting requirements. All temples are required to register with the state.

Secretary of State George Firestone has termed the investigation ''one of the largest'' ever conducted by his department. Five investigators are assigned full time to the case.

The Florida probe began in July after The Orlando Sentinel published a four-part series showing that the national fraternity gave its hospitals only a third of the money it raised through fund-raising events in 1984. The newspaper also found that only about 1 percent of the net profits of more than 175 Shrine circuses went to the hospitals, although the events often were presented as hospital fund-raisers.

Shriners have called the series inaccurate and misleading, charging that it failed to draw a distinction between fund-raising events that benefit the hospitals and those that benefit the temples. The Shrine, however, has refused to disclose detailed records on temple fund-raising.